Patents by Inventor Charles Van Assche

Charles Van Assche has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sucrose phosphate synthetase (SPS), a preparation method and cDNA therefor, and use of the cDNA for modifying SPS expression in plant cells
    Patent number: 6783986
    Abstract: Proteins having the activity of saccharose phosphate synthetase (SPS) and a process for obtaining the same.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: August 31, 2004
    Assignee: Aventis Crop Sciences GmbH
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais
  • Modification of sucrose phosphate synthase in plants
    Patent number: 5981852
    Abstract: Sucrose phosphate synthase (SPS), a process for its preparation, its DNA, and utilization of DNA encoding SPS to modify the expression of SPS in the plant cells are provided. Methods and compositions for producing SPS protein and DNA encoding SPS from a number of sources are provided. Also provided are transgenes comprising DNA encoding SPS and methods for the production of transgenic plant cells and plants which have extra SPS activity, and thus an increased capacity to synthesize sucrose. Transgenic plant cells and plants with the additional SPS activity exhibit altered carbon partitioning, growth and development, and yield under a variety of conditions.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: November 9, 1999
    Assignee: Calgene LLC
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais
  • Saccharose phosphate synthetase (SPS), a preparation method and CDNA therefor, and use of the CDNA for modifying SPS expression in plant cells
    Patent number: 5917126
    Abstract: A cDNA coating for a protein having saccharose phosphate synthetase activity and a vector permitting the expression of a protein having saccharose phosphate synthetase activity under the control of a promoter directing the said expression.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: June 29, 1999
    Assignee: Roussel Uclaf
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais
  • Sucrose phosphate synthetase isolated from maize
    Patent number: 5714365
    Abstract: A protein having sucrose phosphate synthetase (SPS) activity is isolated from plants, preferably maize. The protein has a molecular weight of 110-130 dK and contains at least one peptide selected from Thv Trp Ile Lys, Try Val Val Glu Leu Ala Arg, Ser Met Pro Pro Ile Trp Ala Glu Val Met Arg, Leu Arg Pro Asp Gln Asp Try Leu Met His Ile Ser His Arg and Trp Ser His Asp Gly Ala Arg. Isolation is carried out by obtaining an extract from the plant by grinding, centrifugation and filtration; enriching the extract in SPS protein by precipitation in an appropriate solvent such as polyethylene glycol, centrifugation and solubilization of the precipitate obtained in a buffer solution; subjecting the protein thus obtained to low pressure anion exchange chromatography, chromatography on heparin Sepharose and high pressure anion exchange chromatography; and purifying the active fractions obtained by passage through two high pressure chromatography columns.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: February 3, 1998
    Assignee: Roussel UCLAF
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais
  • Sucrose phosphate synthase (SPS), its process for preparation its cDNA, and utilization of cDNA to modify the expression of SPS in plant cells
    Patent number: 5665892
    Abstract: Sucrose phosphate synthase (SPS), its process for preparation, its cDNA, and utilization of cDNA to modify the expression of SPS in the plant cells are provided.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: September 9, 1997
    Assignee: Calgene, Inc.
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais
  • Sucrose phosphate synthase (SPS), its process for preparation its cDNA, and utilization of cDNA to modify the expression of SPS in plant cells
    Patent number: RE38446
    Abstract: Sucrose phosphate synthase (SPS), its process for preparation, its cDNA, and utilization of cDNA to modify the expression of SPS in the plant cells are provided.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: February 24, 2004
    Assignees: Calgene, LLC., Roussel Uclaf
    Inventors: Charles Van Assche, Danielle Lando, Jean Michel Bruneau, Toni Alois Voelker, Monica Gervais